DRM Chair – Chair that self-destructs after 8 uses

Created by ECAL‘s past and present students, DRM Chair provides a limited number of use before it self-destructs. A small sensor detects when someone sits and decrements a counter. Every time someone stands up, the chair knocks a number of time to signal how many uses are left. When reaching zero, the self-destruct system is turned on and the structural joints of the chair are melted.

The number of use was set to 8, so everyone could sit down and enjoy a single time the chair. The cast-wax block is embedded with nichrome wire, the sensor made with Arduino counts the people and number 8 is reached the system is turned on.